Improvement in sawdust-conveyers



F. MARTIN, Jr. Saw-Dust Gonveyer.

No. 218,757. Patented Aug. 19,1879.

6am I M- ATTORNEY N. PETERS, PHQTO-LITHGGRAPHER, WASHINGTON. n C.

UNITED/STATES PATENT OFF E,

FREDERIG MARTIN, JR, or WEST JEFFERSON, oHIofl llVl PROVEMENT INSAWDUST- CONVEYERS.

Specification forming part of Letters Patent No. 218,757, dated August19, 1879; application filed March 22, 1879. r

To all whom it may concern:

Be it known that LFRRDERIG MARTIN, J r., of West Jefferson, in thecounty of Madison and State of Ohio, haveinvented a new and valuableImprovementin Sawdust and Refuse Elevator and Oonveyer; and I do herebydeclare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon.

Figure l of the drawings is a representation of a longitudinal verticalsection of my improved conveyer. Fig. 2 isa top view of the same.

This invention has relation to machines for raising and conveyingsawdust and refuse out of saw-mill pits; and it consists in theconstruction and novel arrangement of the stepbottom troughshavingreciprocating motion, the driving-cams, bumpers, reacting-springs,and turn-table, all as hereinafter shown and described.

'In the accompanying drawings, the letter A desigates the frame-work. Bindicates the driving-cam, which is operated by means of a belt from thesaw-mill or otherwise. This cam is provided with a spiral groove, at,extending about three-fourths of the distancearound it, andcommunicating with a recess, 12, having a returning-shoulder, c, saidrecess occupying the re'mainin g fourth of the circumference of the cam.

O 0 indicate the elevating and, conveying troughs, each having two sidewalls and one end wall, cl, the other or discharging end being open.Thebottoms of these troughs are formed with inclined steps 6 andshoulders g, the latter facing the open ends of the troughs, and theformer extending from the top of one shoulder to the base of the next inrear. These inclined steps are long enough to provide a gradual ascent.The first or main elevating trough, O, rests by its upper end on asuitable anti-friction roller, which has its bearings in theframe-standards A, and its lower end is provided with an underprojection or stop, k, which is pivoted to a slide, D, which works backand forth on anti-friction rollers under the cam B, and has a wrist-pin,h, for engagement with the cam.

In front of the stop-proj ection of the el evatortrough is located abumper, e, which is faced with rubberorothersuitablematerial; Springs Fconnect the elevator-trough to the standards A or other fixedattachments.

It is evident that as the cam Bis turned the slide will draw theelevator downward and toward the cam, and that when the wrist-pin of theslide reaches the shoulder c of thecamrecess the reacting springs F willquickly throw the trough forward and upward, bringing itsstop-projection 7a into forcible contact with the bumper e, and causingthe contents of the trough to jump forward andupward. The sawdust andother refuse are delivered to this trough by means-of a hopper leadingfrom the saws. Next to this leading trough G is arranged the succeedingconveyer or trough, O. This trough is also seated on anti-frictionrollers, its forward end being supported by an adjustable standard, G.Its rear end, which is under the discharging end of the leading trough,is provided with a catch or ledge on its bottom, to one side thereof,and is support ed on a turn-table, H.

A rotating disk, L, having two or more working-studs, l, serves, as thedisk turns, to engage the catch and carry it to the rear, when itsuddenly becomes disengaged and allows the trough to be thrown forwardby the reactin g-sprin gs F, whereby it is connected to the standard G.This disk L is provided with a stem or spindle, s, which extendsdownward through the turn-table H, and a supportingframe, N, carries onits lower end a ratchetwheel having radial teeth on its upper surface aswell as edge teeth. The latter engage with a spring-pawl, m, whichprevents the ratchet from turning backward, and the former engage with adrop-pawl, 19, which is pivoted to one end of a short lever, a, workingon the stem 3, the other end of which is piv-- oted to a connecting-bar,K, which is joined to a post or arm, L, extending downward from thebottom of the leading trough C.

It is apparent that intermittent motion is communicated from the leadingtroughlto the disk L, and by the latter to the second trough,

C, which is also provided with a bumper, E. The motion of the lattertrough is, however, usually slower than that of the leading trough.

The turn-table H has side walls which extend upward beyond the sides andend of trough G, and are sufiiciently flared outward to form a hopper,whereby the dust and chips or other refuse are guided into this end ofthe second trough from the discharging end of the preceding trough,whether the second trough be in line with the first or turned at anangle therewith upon its turn-table. In the latter case its standard ismoved around into corresponding position. This enables the mass of dustand refuse to be deposited at different points, and prevents the end ofthe machine from becoming clogged.

It is evident that this arrangement can be extended by the introductionof other conveying-troughs and working parts, according to the heightand distance to be traversed.

The troughs are usually covered with lids fixed to post to keep out therain.

Having described my invention, what'I claim as new, and desire to secureby Letters Patent, is-

1. The combination, with the stepped recip' rocating troughs C G, of thereacting-springs I" F, the bumpers e E, and intermittent drivingmachinery, substantially as specified.

2. The combination, with the cam B, slide D, trough G, springs F, andbumper E, the trough 0, its turn-table H, springs F, bumper E,adjustable support G, and operating mechanism connected to the trough O,substantially as specified.

3. The elevator and conveyer consisting of a series of stepped troughs,having reciprocating motion and reacting against bumpers, and havingturn-tables and adjustable supports, to change the direction of theseries when desired, all constructed and arranged to operate by suitablemechanism, as-specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

FREDERIG MARTIN, JR.

Witnesses:

JOHN N. BEACH, MILO S. MCNEAL.

